Drier.



No. 834,696. j PATENTED 00130,V 1905.

J. Moc'.'wH1TB.

DRIBR.

APPLICATION FILED IAB. 18,1006.

2 SHEETS-SHEET 1.

fugaz 4 fk?. 2

ff i 'Jo/1.11, M. ll/lz te *y nfl' Nouns rlrllu cm. 'Allnuafom n. c.

No. 834.696.' PATENTEMGT. ao,- 1906.

J. Moc. WHITE., D RIBR. APPLIGATION FILED IABdvl. 1906.

. 2 sunnite-sani' 2.

3 munten 221m M. Wma wi h1 una v attoznui "al muuu: Pxrlks rm lusnmarnn,n. cA

UNITED sTATEs PATENT oEErcE-.

JOHN MCOLURE WHITE,OF MAPLETON BOROUGH, PENNSYLVANIA, AS-

SIGNOR OF ONE-THIRDTO FRANK OOONNOR, OF MAPLETONl DEPOT, y f

PENNSYLVANIA, AND ON E-THIRD TO TiMoEE, MARYLAND.

R. TYNE SMITH, JR., OF BAL- DRIEE.

Specification of Letters Patent.

Apatentar oct. so, 1906 Application iiled March 16, 1906. Serial No.306,448.

T0 a/ZZ whom t may concern.-

Beit known vthat I, J oI-IN MCCLURE WHITE, a citizen of the UnitedStates of America, and a resident of Mapleton borough, county ofHuntingdon, State of Pennsylvania, have invented certain new and usefulImprovements in Driers, of which the following is a specification.

My invention relates to certain new and useful improvements in driers.

The form of drier to which my invention is particularly adapted isdesigned for the purpose'of drying sand or similar' material.

One ofthe chief difficulties which has been encountered in sand-driersas heretofore constructed has been .that the material to be dried andthe gases of combustion both passed too slowly through the chamber. As aresult of this the material was exposed too long a time to the dryingaction, thus superheating the material and causing the waste of a largeamount of the heat of the `drying agent. f r

The object of myinvention is to provide a structure in which the lengthof time required for the material to pass through the drier is decreasedand the material broken up into small particles by suitable means. By sodoing the heat of the drying agent is brought into contact with eachseparate particle, which is thus dried with the least-possible Waste ofheat, passing then directly from the structure, thus preventngsuperheating.

With these objects in view my invention consists of certainconstructions and improvements, the preferred form of which will be`first described and 'then the invention particularlypointed out in theclaims.

VR eferring to the drawings, wherein the same part is designated by thesame reference-numeral wherever it occurs, Figure 1 is a longitudinalsection of a drier made in accordance with the referred form" of myinvention. Fig. 2 is a ongitudinal section taken at right 'angles toFig. 1. Fig. '3 is a sectional view similar to Fig. 1, showing, however,only the central portion of the drier. Fig. 4 is a detail perspectiveview showing the interior arrangemen of parts, the same being shown asremoved from the stack.

1 designates a stack or chimney which is provided in its lower portionwith a suitable grate 2, on which a re may be maintained.

The stack 1 is preferably and as shown provided for a part of its heightwith a lining 3 of fire-brick or the like.

4 and 5 are sets of screens which are prefv erably diagonally arrangedand extend in opposite directions, the set of screens 5 beingv shown assupported on the top of the iirebrick section 3, with the section 4supported on the section 5.

6 is a conical screen which rests upon the screen 4 and on top vof whichthe sand or other material to be dried is dumped.

7 7 are a series of inclined plates, made, preferably, of metal, whichare set in the firebrick walls of the drier. These plates are of a widthless than the width of the flue in the stack and extend outalternatelyfrom the walls-that is to say, one plate extends out from onewall and the next vplate from the opposite wall. These plates aresupported in position by means of the rods 8 8 or the like. At the upperend each' plate is preferably provided with an upwardly-turned edge 9,the edge 9 extending up in front of the lower end of the plateimmediately above the same, so as to catch the sand or other materialpassing down from the upper plate and divert it onto itself. 4

10 10 are a series of screens supported in the side wall and extendingin front of the lower edge of each plate, preferably at right anglesthereto, these screen-sections 10 10 being for the purpose of retardingthe flow of sand from one plate to the next below. The plates, as hasbeen before stated, do not extend clear across the flue, and between thefree edge of each plate and the side of the ilue I place a brick 1 1,referably composed. of ireclay or the like, t e brick being supported inposition by means of the extensions12 12 on the brick, which areembedded in the lining of the stack. This brick is L shape incrosssection and is provided with a flue 18,'which is also L shape incross-section and extends for substantially the length of the brick.

The brick is placed in position in the fluye so that the edge of the Hue7 rests in the angle of the L, with one of the sides of the L extendingbelow the plate and the other extending over the plate and above thesame. The flue 13 in the brick forms-a passage-way by which the productsof combustion can pass from below the plate up over the same and IOO'close tothe top faces of the plates 7.

across the top thereof. These bricks, as will be apparent, are onalternate sides of the chimney, and consequently the'products ofcombustion will by passing through the fines of the bricks pass from oneside of the stack to the other. It will be noticed that there is a spacebetween' the ends of the plates 7 7 and the sides of the stack. This isto permit part of the products of combustion to pass straight up thechimney without taking the serpentine course which is given the productsof combustion passing through the iiues of the bricks.

In the opera-tion of my device aiire is built upon the grate 2, and whenit is thoroughly started sand or like material to be dried is dum ed inthe top of the stack. The materia passes through the screens 6, 4, and 5and is thoroughly broken up by them. It then drops onto the upper one ofthe plates 7 7 and rolls down the same, striking the screen 10, when itpasses off the end of the plate, and then passing onto the next plate 7,where it runs in a reversed direction. This continues until the materialhas passedover all the plates of the series, when it falls into asuitable delivery-chute 14, extending through the side ofthe stack vandby means of which the material is delivered. Part of the products ofcombustion pass through the flues 13 ofv the bricks 11 and are caused totraverse a serpentine paththrough the drier, coming Other parts of theproducts of combustion pass directly up through the stack by passingbetween the ends of the plates 7 and the side walls of the stack.

While I have described what I believe to be the-preferred form of myinvention, I desire to have it understood that many. changes may be madein the form, construction, and arrangement of parts without departingfrom the spirit of my invention.

The reasonwhy I prefer to have part of the products ofcombustion passdirectly through thestack is to cause a sufficient draft to promotecombustion on the grate and to have the gases sufficiently hot to beeffective when they pass through the screens.

What I claim as new, and desire to secure by'Letters Patent, is-

1. A drier composed of a stack providedon its interior with a series ofalternately-disposed. inclined plates extending fromv alternate sides ofthe stack, the plates being narrower th an thelstack, whereby a space isleft at alternate sides of the stack for the passage of` thedryingagent.

' 2; A drier composed of a stack provid ed on its interior with a seriesof alternately-disposedv inclined plates extending from alternate sidesyof the stack, the plates being narrower than the stack and a flue placedbetween one edge of the plate and the stack,

whereby a passage is formed from below the plate to the upper sidethereof.

3. A drier composed of a stack provided on its interior with a series ofalternately-disposed inclined plates extending from alternate sides ofthe stack, the plates being narrower than the stack,.and a ilue composedof an L-shaped brick having a passage extending from below the plate tothe upper side thereof, located between the edges of the plates and thesides of the stack.

4. A drier composed of' a stack provided on its interior with a seriesof alternately-disposed inclined plates extending from alternate sidesof the stack, the upper edge of each plate being upwardly turned tocatch the material passing off the lower end of the plate immediatelyabove.

5. A drier composed of a stack provided on its interior with a series ofalternately-disposed inclined plates and a screen extending across thelower edge of each plate to obstruct the passage of material to bedried. through the drier.

6. A drier composed of astack provided on its interior with a series ofalternately-disposed inclined plates and a screen arrangedv at rightangles at the lower edge of each plate to obstruct the passage ofmaterial to be dried through the drier.

7. A drier composed of a stack provided on its interior with ascreen-section, a series of alternately-disposed inclined platesextending from alternate sides of the stack below the screen-section anda furnace below. the inclined plates.

8. A drier composed of a stack provided on its interior with a set ofscreens in which the screen elements are diagonally arranged andparallel to each other, a second set of screens located above the firstset in which the screening elements are similarly arranged in anopposite direction to the iirst set and a conical screen arranged overythe sets of screens.

9. A drier composed of a stack )rovidedon its interior with a set ofdiagonally-aman ged screens, the screens being arallel to each other anda conical screen ocated over the diagonally-arranged screens.

10. A drier composed of a stack; provided on its interior with two setsof diagonally-arranged screens, the `screens of one set extending in anopposite direction from the screensl of the other set, the screens ofeach set being parallel to each other.

Signed by me at Mapleton borough., I'Iuntingdon county, Pennsylvania,this 2d day of March, 1906.

JOI-IN MCCLURE WHITE.

Witnesses FRANK OCoNNoR, R. S. HENDERSON.

IOO

IIO

